Derrick.



M11. SASGBN. 1

'Patented Jau 18,1910.

2 snnnfrs-SEBT 1.

M; J.- SAMEN.

' nnmcx. APPLICATION FILED APB. A5, 1909.

947,029. Patent-.ea Jan. 18,1910.

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` tional detail, showing the band brake andA collar therefor; and Fig.y 8 a detail, showing MIcHaELfJ. sAsGEN, or` CHICAGO, ILLINOIS.

DERRICK.

specification of Lettesirateiii;

Patented Jan. 18, 1910.

Application filed Apr1.5, 1909. Serial No. 487,959.

To all whom it may concern:

Be it known that. l', MieifiaiiiJ J. Sassari, a citizen of the United States, residing at Chicago, in the county of Cook and Statexoi lllinois, have invented certain new and use: ful Improvements i'n Derricks, of which the following is a specihcation.

This dei-rick is particularly intended for light service in hoisting building material or the like, and is intended to be easily adjustable to different positions on a building, being so constructed that it can be located `at the extreme edge or corner ot' a roof or tloor and can there be rigidly secured to handle the intended loads. The derrick is intended to swing in a complete circle, which gives it a wide radius ot action, which is particularly desirable in derricks of this class.

The invention relates. particularly tothe derrick structure as a whole, includingthe means provided i''or mounting and anchoring the dei'rick; to the brake `which acts upontlie cable drum during the descent of the block;

and to the location and arrangement of these'I various devices within convenient reach of the operator.

Further objectswill appear fromv adetailed description otl the invention, f which consists in the features of construction and combination of and claimed.

In the drawings,

position; Fig. a side elevation of the drum and associated parts; Fig. 6 a top or plan view of the drum and hangers; Fig. 7 a secthe clamp for the ends of the cable The derrick, as aqwhole, is mounted upona base comprising a pair of sills 9 and 10, set at right angles to one another and rigidly secured together. At the anglev oty the base` is located a mast 11 which is suitably held braced by means of diagonally extending braces 12. About half way up the mast is located a grooved collar 13 provided, at

suitable intervals, with ears or lugs 14 which,

as shown, are four in number and areboltedy to the 'flat sides of the mast which,I in thei form shown, is octagonal in shape. The

parts hereinafter described Figure 1 is aside elevarx tion of the derrick; Fig. 2 a top VorplanY view thereof; Fig. 3 a cross sectional view` through the post, showing the drinn in Velevation and the band brake locked; F ig. 4 a similar view, showing the band brake un? locked and the boom swung to a diHe'rent groovedcollar furnishes a bearing for a swingi-ng'bracket frame 15 comprising a head having clan'ipin'g arms 1G which eiicircle the grooved collar and terminate, at

` their rear ends, in a pair ot ears 17, the construction being that ot a split ring which is ladapted to be clamped onto the collar when itis desired to lock the bracket frame against revolution. The ears 17 have entered therethrough a bolt 1S, to the projecting end of which is pivoted afbiturcated handle v19. The pivot pin 2O is entered thronghthe sides of the handle at such a point as lto give an eccentric or cam action thereto, such that when the handle is thrown into the position shown in Fig. the ends of the handle will act against the adjacent ear.1

17v and serve todraw on 'the bolt 18 and lock `the clamping arms 1G against the grooved collar. The bracket trame 15 is further.. provided on its forward side with foiiwardly projectiiig arms 21, provided at their outer ends with hangers 22, whichl furnish a bear--x ingfoia shaft 23 which carries a vdrum ,2d

outside of which is located va ratchet wheel` 26; The brake wheel coacts with -thebrake shoe 25 on the end ota lever 26?, which isJ pivotedin its center :to the bracket` frame by means of a pivot rod 27, which rod is en-i tered through the lower end of a diagonally' disposed "boom28- The brake lever terminates ii'ila handle 29, in close, proximity to the bifuicated; handle 19, so that the oper' `atorV will jiind both of -the handles' within 'easy'a-nd convenient reach. The4 ratchetbetween rthehangers and also serves, onfone of its outer ends, to mount a. brake wheel` 25,

The boom, at its outer end', is connected' Vwith a brace beainBQ by mea-ns off? plates 33,

from wliichdepends a sheave bracket 34 car lrying a slieave 35,' which coperateswith block l36." A cable 37, as shown, ispassed and back on itself, and is entered through a U 'shaped-clamp 4:0 having a cross head 4twice over the sheave, land its end 3S is 'looped around a hook 39? onfethe block v36' which receives a set screw 12, which serves i to compress the' end of the cable against the'l main strand #thereof and hold the loopr Obviously, the cable -might be' otherwise carried around the.

around the hook.

sheave and through the block. The inner end of the brace beam 39. is provided with a tongue 43, which receives a pivot stud 44 upwardly projecting from the top of the mast, which arrangement permits the boom with its brace beam to swing to any position around the mast. The booin and brace beam are further reinforced by means of a pair of vertical brace bars 45, the upper ends of which are'coniiected to the brace beam and the lower ends of which are connected to the side arms 2l of the bracket frame. The base of thederrick is adapted to be held against displacement by means of outer bolts 46, which are entered through the sills 9 and 10, near their Outer ends, and an inner bolt 47, which is entered through one of the sills, near its point of connection with the other.

In use, the boom can be swung to any desired position by throwing down the bifurcated handle, as shown in Fig. 5, which unlocks the clamping arms and permits swinging of the boom. Vhen the boom has reached the desired position,it can be locked and the material hoisted-by means of the drum. Thereafter, in allowing the block to descend, the brake 25a can be thrown to retard the descent of the block and cable. The arrangement is one which brings the controlling mechanism of the derrick within easy reach of the operator, and enables the d errick to'be easily and readily operated to perform vthe light work more particularly intended. The method of supporting and holding the' derrick is one which permits it tobe locatedat the eXtreme edge of a floor orv roof and held in position by the bolts 46 and 47 without additional means of support, which is highly desirable in permitting the derrick to be used in widely different con- Vhat I regard as new and desire to secure by Letters- Patent is':

" ring, and means for clamping the mounting the split mounting and lock the boom against revolution, substantially as described.

4. A deirick, comprising a mast, a boom outwardly projecting from the mast, a mounting for the boom adapted to permit the boom to be swung around the mast, means for locking the boom against revolution, a drinn connected with the boom, and a brake adapted to retard the rotation of the drum, said brake being operable from the position adjacent to the means for locking the boom against revolution, siibstaiitially as described.

5. A derrick, comprising a mast, a boom outwardly projecting from the mast, a mounting for the boom adapted to permit the boom to be swung around the mast, the said mounting being in the form of a split ring, means or clamping the mounting to the mast to prevent revolution of the boom, a drumI connected with the boom, and a brake adapted to retard the rotation of the drum, said brake being operable from the position adjacent to the means for locking the boom 'against revolution, substantially l as described.

6. A derrick, comprising a mast, aboom outwardly projecting from the mast, a mounting for the boom adapted to permit thel boom to be swung around the mast, the said mounting being in the form of a split ring, a bolt for drawing together the ends of the split mounting, a handle eccentrically pivoted to the bolt and adapted to move the bolt to a position to draw together the split mounting and lock the boom against revolution, a drum connected with the boom, and a brake adapted to retard the rotation of the drum, said brake being operable from the position adjacent to the means for locking the booin against revolution, substantially as described.

MICHAEL J. SASGEN. lVitnesses PiiinsoN W. BANNiNe XVM. P. BOND. 

